Your build list looks great!
Raid 0 does indeed speed things up for both Premiere and Photoshop (and Bridge) - go for it!
I would suggest 4 x 1TB (WD Blacks are good) in a RAID 0 configuration for everything but your OS and programs: media, projects, swap, scratch, Premiere output, etc.
Note: this is a Premiere forum section and the consensus here seems to be that two 2x1TB RAID 0 arrays are better for Premiere, however as you are working with Photos a lot, and VERY large ones at that, I think that you would really appreciate a 4x RAID 0. If cost is prohibitive, go with previous gen. 1TB drives which are very inexpensive now (ie. Hitachi 7k1000.C, Samsung F3, WD Black 32MB cache, etc.).
I personally like your SSD boot drive choice, but would suggest striking the 80GB SSD Scratch disk completely, assuming you go with at least some sort of RAID 0.
Thanks for the input.You hit on the one area that I am still up in the air about.
I have been going around in circles with the RAID 0 HDD vs. SSD (Scratch) and SSD (Data).
I know that the HDD has been one of the "bottlenecks" in my present set-up. On one hand, the expense difference between HDD & SSD leads me towards the HDD. On the other hand, in a RAID 0 configuration, one has twice the chance of a failure. With my back-ups handled by on-line and external means it really comes down to speed vs. reliability. Finally, with the Data Drive, it doesn't seem to make sense to have a really fast system and then create the same speed restriction that I now have.
With the RAID 0 Scratch Disc I would, aagain, be doubling the failure possibility over the small SSD.
As you no doubt can tell... I want to turn the unit on and have it work... fast! As I am retired and now have my share of "Senior Moments" I would like to direct my energy towards prosessing photo and video work... have them process in less time than I have remaining... and have the least exposure to component failures possible. Having been a commercial pilot for over 35 years I know that if it is mechanical it will fail.
Would it seem reasonable that I use the on-line backup just for my "critical" photo work and then take advantage of USB3 and an External Drive to make a "mirror" to the Data Drive? (I know that I could use RAID 0 + 1 but it has been recommended that I not do that)
Thanks again... Look forward to your thoughts
Had to laugh, "you are still up in the air" (from a retired pilot)!
I too wanted speed and reliability, and I spent way more that two RAID 0's to get it. I too am a hobbiest, but have been using hardware RAID 5 for all my photos and video for at least 8 years now and will never settle for less. Had a 4 drive, then 5 drive, and am currently using a 8 drive array. My OS and programs are on a RAID 0 SSD array that I do an image backup on every so often in case they ever melt down (ShadowProtect backs up 80GB to the RAID 5 in 4 - 1/2 minutes!).
Why do I love drive speed? When I use Bridge to navigate photos after shooting 400 images, I can see full monitor images at full resolution faster than one per second to do preliminary ratings (1 = trash, 2 = keep, 3 = good). Also, drive speed with today's cpus allows for editing HD AVCHD video without any issues and fast DVD rendering.
I use SATA drives connected with SATA cables (via cold boot) for offsite data backup; it's a solution that is WAY fast compared with USB this and tha and certainly faster than on-line storage.
Their are lots of users here with lots of opions so keep reading for other thoughts.
And, good luck with this ever so difficult decision: reliability, speed, low cost... You can't have them all - you must pick two!